<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<title>testfile</title>
	<script type="text/javascript">
        function a(x, y) {
            console.log(arguments)
            console.log(arguments[0])
            console.log(x)
        }

        a(1, 2, 3);
        a();
        window.onload = function () {
            var a = document.getElementById("123");
            console.log(a.innerHTML);
            console.log(a.innerText);
            console.log(a.outerHTML);
        }
	</script>
</head>
<body>
<div id="123">
	div_front
	<p>ppppppppppp</p>
	div_behind
</div>
</body>
</html>